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FAQ Breath Alcohol Analyzers

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Do I Need to Service the Breath Analyzer (AD) Before Verification?

Most breath analyzers require servicing and adjustment at six-month intervals. Some types can be adjusted directly by SMÚ, while others must be sent to an authorized service center. More details are provided in the pricing offer for the specific device.

Why Is It Necessary to Verify a Breath Analyzer?

Breath analyzers are classified as designated measuring instruments under Decree No. 161/2019 of the ÚNMS SR on Measuring Instruments and Metrological Control (hereinafter referred to as the "Decree").
According to Section 11 of the Metrology Act, a designated measuring instrument is an instrument used, among other things, for measurements related to financial transactions, including:

  • Price calculation, fees, tariffs, customs duties, taxes, compensations, fines, reimbursements, insurance, or similar payments.

How Long Is the Verification of a Breath Analyzer Valid?

According to Annex No. 1 of the Decree:

  • Breath analyzers with an electrochemical sensor must be verified every 6 months.
  • Breath analyzers with an infrared sensor must be verified annually.

What Are the Possible Outcomes of the Verification?

  • If the breath analyzer passes verification, SMÚ will issue a certificate of verification in accordance with Section 25(8) and mark the designated measuring instrument with a verification mark.
  • If the analyzer fails the test, SMÚ will issue a rejection letter according to Section 25(9). This document will include:
    • SMÚ's identification details.
    • Information required to identify the measuring instrument.
    • Reason for rejection.

What Is the Difference Between Verification and Calibration?

  • Verification is a metrological control required by law for designated measuring instruments. The result can be either "Pass" or "Fail".
  • Calibration (adjustment) is the process of setting a measuring instrument to a predetermined value specified by the manufacturer.
    • Breath analyzers generally require calibration every six months, and the device itself indicates when adjustment is needed.